Return first non-null value

Question

I have a number of functions:

String first(){}
String second(){}
...
String default(){}

Each can return a null value, except the default. <

Answer 1

Just make a class with one function like this:

class ValueCollector {
  String value;
  boolean v(String val) { this.value = val; return val == null; }
}

ValueCollector c = new ValueCollector();
if c.v(first()) || c.v(second()) ...
return c.value;